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Old 12-17-2015, 01:28 PM   #1
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Lawsuit filed against GM Re: Tow Ratings

Interesting.

Did any of you guys wait for the '14 model specifically because the "tow rating" was going to be higher? I know there was A LOT of talk about it on the lot when I bought my GMC back in '12.

Class Action Lawsuit Filed Against General Motors After Truck Tow Ratings Get Downgraded
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Old 12-21-2015, 02:36 AM   #2
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This is interesting because when I bought my 2014 2500 hemi before I bought it the website that with 3.73 gears that it can tow 11,400 so I bought it and later when I went back to look again after I got it said now that the towing ability is 11,050.
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Old 12-21-2015, 12:58 PM   #3
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Lawsuit filed against GM Re: Tow Ratings

It's because GM adopted the SAE J2807 towing standard. Other manufactures were affected when the adopted the standard too.
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Old 12-21-2015, 02:34 PM   #4
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Oh, I thought something was wrong because I knew that it change, I'm planning on getting the 6.4L anyway.
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Old 12-22-2015, 08:44 AM   #5
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Quote:
Originally Posted by SouthCo View Post
It's because GM adopted the SAE J2807 towing standard. Other manufactures were affected when the adopted the standard too.
The article specifically states that this was not the result of GM's adoption of the J2807 standards which took place with the 2015 model year.

From the looks of the graphic in the article, GM was saying the 3.08 had the same towing capacity as the 3.42 in some configurations. Could have been a typo, or could have been "misleading" customers. Of course the lawsuit claims GM was maliciously misleading customers.

IMO, salespeople mislead customers every day regarding the capacities of their vehicles. And the marketing department doesn't help matters. You can see it all over this forum and others. Someone says "yeah, my truck is rated to tow 9800 lbs, so my 8000 lb RV should be no problem ..." We all know how that story goes.

It's just interesting that a manufacturer is getting called out on this. It makes me wonder how much that happens, and if lawsuits like this will change anything. I imagine there will be a few more disclosure requirements in tiny print at the bottom of TV ads, and unfortunately that'll be about it.
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Old 12-22-2015, 10:55 AM   #6
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Lawsuit filed against GM Re: Tow Ratings

Good catch CB. I skimmed over it too fast while on a break at work lol.

So this affected 3.08 rear ends. Can't imagine picking that setup if looking to tow much...
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Old 12-22-2015, 11:19 AM   #7
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Good catch CB. I skimmed over it too fast while on a break at work lol.

So this affected 3.08 rear ends. Can't imagine picking that setup if looking to tow much...
I was thinking that too. Why would you ever choose that rear-end if you knew you were going to use the truck to pull something? But then, I know more now than I did before. When I bought my GMC, I didn't look at any of those specs. My salesman and I didn't talk much about towing specs, and I depended on my own limited knowledge at the time. So I could see a salesman selling that truck to someone wanting to tow with it, even pointing to the manual to verify what he's saying, then later finding out you don't have enough truck.

I was lucky with my GMC; it came with the HD towing package and the 3.42 rear end. But I didn't know that when I bought it; I was naive, and salesmen prey on that. As it was, my truck had JUST enough capacity to tow my trailer, despite everyone saying "nah, don't worry about it, you'll be fine with that truck". And they all only LOOKED at the truck from afar. Not once did anyone open up the door and check the sticker. Again, I was lucky I had just enough truck for my trailer.
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Old 12-22-2015, 11:31 AM   #8
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The reason GM pushed the 3.08 gear is gas mileage... The funny thing is, you can have that 3.08 rear (with the newer 6 speed trans) and still be better off than the bit older trucks with a 3.73 (and 4 speed trans). It all comes down to the gears in the transmission. There was a post awhile back where someone was looking to tow with a Yukon with a 3.08 rear - I posted up the final drive ratios and showed that he was actually better off with his 3.08 than I was when I had my 06 Tahoe with 3.73's last year! Not saying I would choose a 3.08 gear, but it isn't as bad as you think when you look at final drive ratio...
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Old 12-22-2015, 11:38 AM   #9
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Here are the ratios in case anyone is interested:


Here are the gear ratios for the 6L80E:
1st - 4.027
2nd - 2.364
3rd - 1.532
4th - 1.152
5th - 0.852
6th - 0.667

Compared to the 4L60E:
1st - 3.059
2nd - 1.625
3rd - 1.000
4th - 0.696

Final drive ratio comparison:

6L80E with 3.08 gears:
1st – 12.4
2nd – 7.28
3rd – 4.72
4th – 3.55
5th – 2.62
6th – 2.05

Compared to 4L60E with 3.73 gears:
1st – 11.4
2nd – 6.06
3rd – 3.73
4th – 2.6
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